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Finding the Fourth Proportional to 489.60, 733.77 and 327.42

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Solution

The fourth proportional to 489.60, 733.77 and 327.42 is: 490.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    489.60 : 733.77 = 327.42 : x
  2. Step 2: Convert to fraction form
    489.60/733.77 = 327.42/x
  3. Step 3: Cross multiply
    489.60x = 733.77 × 327.42
  4. Step 4: Simplify right side
    489.60x = 240,250.97
  5. Step 5: Solve for x
    x = 240,250.97/489.60
  6. Step 6: Final answer
    x = 490.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.